Thanks for answer. I still cant use my custom model. I created custom controller, model, view. But i stucked with problem discribed here https://our.umbraco.org/forum/using-umbraco-and-getting-started/75998-update-to-742-all-custom-hijacked-controllers-stopped-working. And I did it exactly as solution suggested there, but it doesnt work. The error is Cannot bind source type Umbraco.Web.Models.RenderModel`1[[Umbraco.Web.PublishedContentModels.Registrafiya

Here is my custom model:

public class RegistrationViewModel : RenderModel
    {
        public RegistrationViewModel(IPublishedContent content) : base(content)
        {
        }

        [DisplayName("Имя пользователя")]
        [Required(ErrorMessage = "Пожалуйста введите ваше имя", AllowEmptyStrings = false)]
        public string Name { get; set; }

        [DisplayName("Пароль")]
        [Required(ErrorMessage = "Пожалуйста введите пароль", AllowEmptyStrings = false)]
        [DataType(System.ComponentModel.DataAnnotations.DataType.Password)]
        [StringLength(255, MinimumLength = 6, ErrorMessage = "Пароль должен состоять как минимум из 6 символов")]
        public string Password { get; set; }

        [DisplayName("Повторите пароль")]
        [Required(ErrorMessage = "Пожалуйста введите пароль", AllowEmptyStrings = false)]
        [Compare("Password", ErrorMessage = "Пароли не совпадают! Попробуйте еще раз")]
        [DataType(System.ComponentModel.DataAnnotations.DataType.Password)]
        public string ConfirmedPassword { get; set; }

        [DisplayName("Почтовый адрес")]
        [Required(ErrorMessage = "Пожалуйста введите ваш почтовый адрес(email)", AllowEmptyStrings = false)]
        [RegularExpression(@"^(([A-Za-z0-9]+_+)|([A-Za-z0-9]+\-+)|([A-Za-z0-9]+\.+)|([A-Za-z0-9]+\++))*[A-Za-z0-9]+@((\w+\-+)|(\w+\.))*\w{1,63}\.[a-zA-Z]{2,6}$", ErrorMessage = "Введите правильный почтовый адрес")]
        public string Email { get; set; }

    }

Here is my custom controller inherited from SurfaceController:

public class MemberRegisterController : Umbraco.Web.Mvc.SurfaceController
    {
        public ActionResult RegisterMember([Bind(Prefix = "registrationViewModel")]RenderModel renderModel)
        {
            RegistrationViewModel model = new RegistrationViewModel(renderModel.Content);
            if (!ModelState.IsValid)
                return CurrentUmbracoPage();

            var memberService = Services.MemberService;
            if (memberService.GetByEmail(model.Email) != null)
            {
                ModelState.AddModelError("", "Member already exists");
                return CurrentUmbracoPage();
            }
            var member = memberService.CreateMemberWithIdentity(model.Email, model.Email, model.Name, "Member");

            memberService.Save(member);

            memberService.SavePassword(member, model.Password);

            Members.Login(model.Email, model.Password);

         //   return Redirect("/");
            return RegisterMember(model);
        }
    }

Here is partial view, where i create my form:

@inherits Umbraco.Web.Mvc.UmbracoViewPage<RegistrationViewModel>
@using System.Web.Mvc.Html
@using ClientDependency.Core.Mvc
@using Umbraco.Web
@using Umbraco.Web.Controllers
@using MinSoc.Models
@using MinSoc.Controllers


 @using (Html.BeginUmbracoForm<MemberRegisterController>("RegisterMember"))
 {

        <fieldset action id = "job-finder">
            <div class="content-form">
            @Html.ValidationSummary("registrationViewModel", true)

            <div class="form-item form-item-text">  
            @Html.LabelFor(m => Model.Name)
            @Html.TextBoxFor(m => Model.Name, new { placeholder = "Например: Исаев" })
            @Html.ValidationMessageFor(m => Model.Name)
            <br />
            </div>

            <div class="form-item form-item-text">  
            @Html.LabelFor(m => Model.Password)
            @Html.PasswordFor(m => Model.Password, new { placeholder = "******" })
            @Html.ValidationMessageFor(m => Model.Password)
            <br />
            </div>

            <div class="form-item form-item-text">  
            @Html.LabelFor(m => Model.ConfirmedPassword)
            @Html.PasswordFor(m => Model.ConfirmedPassword, new { placeholder = "******" })
            @Html.ValidationMessageFor(m => Model.ConfirmedPassword)
            <br />
            </div>

            <div class="form-item form-item-text">  
            @Html.LabelFor(m => Model.Email)
            @Html.TextBoxFor(m => Model.Email,new { placeholder = "isaev@gmail.com" })
            @Html.ValidationMessageFor(m => Model.Email)
            <br />
            </div>

            <div class="form-actions">
            <input type="submit" value="Зарегистрироваться">
            </div>

            </div> <!--content-form-->
        </fieldset>

}

Here is my view, where i render my partial view:

@inherits Umbraco.Web.Mvc.UmbracoTemplatePage<ContentModels.Registrafiya>
@using ContentModels = Umbraco.Web.PublishedContentModels;
    @{
        Layout = "Master.cshtml";
    }
    <div class="one-sidebar">
        <div id="wrapper">
            <div id="breadcrumbs">
                <div class="inner">
                    <a href="\"><i class="fa fa-home" aria-hidden="true"></i> Главная</a> / Регистрация на сайте
                </div>
            </div><!--.breadcrumbs-->
            <div id="container" class="inner">
                <div id="content">
                    <h1>@Umbraco.Field("registPageTitle")</h1>
                      @Html.Partial("~/Views/Partials/RegisterMember.cshtml", Model);
                    <div class="login-menu">
                        <a href="/авторизация-на-сайте">@Umbraco.Field("registSignIn")</a> | <a href="#">@Umbraco.Field("registSetPassword")</a>
                    </div>
                </div><!--#content-->
                <aside id="sidebar">
                    <h3><span>@Umbraco.Field("registPageHeader")</span></h3>
                    <p>@Umbraco.Field("registInfo")</p>
                </aside>
            </div><!--#container-->
        </div>
    </div>

Please help)) any answer will be appreciated. Thanks