Your userpage is your own to do with as you wish - within reason. (Unreasonable activity would include pornographic images or racist propaganda) For instance you may wish to use your page to advertise your services to students or institutions. To this end you may also wish to put some sample lessons in our “free lessons” pages so that students or others may get an idea of your work. You are at liberty to link to your own website.
The user talk page is owned by the community and, while you may archive it if it gets too long, you should not edit or delete any of the comments thereon.