4 - When you find the show you want, hit OK button. Choose option for Record Episode or Series.
5/6 - Verizon doesn't control ads that are shown during playback. That is from the content provider
7 - Sounds as thought you have an issue (not normal). Is this true on all boxes or just one? Have you tried checking coax connections to the box and at each splitter (most common cause)
9 - Bookmarks are found under My Library menu option in VOD
13 - See above. Same holds true for lack of FFD.
16 - You have to set Guide to remember last state. The exact menu location depends on the STB model you have.
20 - What does that mean?
24 - Priority is very important. If you have scheduled to record more shows than you have tuners available, they are recorded in order of priority.