some days I’m sure I won’t be able to practice on the 9 foot tables at my local hall. They only have 2 but also have 10 8 foot tables. Every table is Brunswick with fresh simonis felt. On days where only the 8 foot tables are available is it wise to practice on them and will my improvements carry over to the 9 foot tables where I’m pretty sure most. 9 ball tournaments are played? Thanks
Piggybacking off a what what others have said, mechanics and form are what you should really be concentrating on right now. While there are lots of very important things, in my opinion probably the two most important things you should be concentrating on as a newer player in regards to form are staying absolutely motionless throughout the entire shot except for your stroking arm, and having a smooth accelerating, confident, committed stroke that follows through naturally, also commonly known as "staying down" and "having a good stroke". Check out the link below for what a good stroke consists of and looks like and what I mean by "smooth accelerating, confident, committed stroke that follows through naturally".
Answers to frequently-asked questions about pool stroke technique advice.
billiards.colostate.edu
If you will force yourself to create the habit of staying down and having a good stroke very early on it will serve you very well in the level of play you will ultimately get to as well as how fast you will get there. If on the other hand you allow yourself to develop bad habits regarding these things, they will at some point become a serious hindrance to progressing further, and it will be massively--massively--harder to correct them down the road after they have become long term bad habits.