User Friendly Options

I'm somewhat new to coding in, but when a user registers is there a solution that can be provide to be user friendly. For example, When user finishes creating a registration, how could it read, "you have signup, please check your email to get your temp." And when a user changes their password, how can the user be redirected to another page to either sign in or continue browsing?

Both questions are very important to our project.
Actually doing both of those things should require no coding at all. Just edit the web part properties in SharePoint, and there are settings you can change for both of these.
That seems to work. I had to create new pages and add the webparts. Now those webparts points to the new pages I created. I seems to be working now. I'm testing the process now. Thanks for the help.