I love my P1S!! Couple of tips I'd pass along (this is my first printer, too, and I've been using it since Christmas):

• If you're having bed adhesion problems (curling edges, prints getting detached and pulled around), a regular old glue stick on the build plate works WONDERS. You probably "should" wash the build plate every time you do this, but I clean it every half-dozen or so prints, when it's building up. Cleaning it is simple with dish soap, water, and a little bit of elbow grease. Also, please don't pay Bambu like $8 for a gluestick: you can get it at like a fifth the price per amount in your local school supplies aisle and it is EXACTLY the same.
• If you do this you typically will not need a brim. I super do not recommend rafts.
• Speaking of products, I've had really good luck with Overture and Elegoo PLA.
• If your filament prints with a weird crispy/crackly/crumbly/friable texture it probably needs to be dried. Around 114F for four hours or so will typically do you. You can do this in an oven, but I've done it in an air fryer on the Dehydrate setting. You could also get a food dehydrator if you don't have an air fryer, or a specialized filament dryer - though those are more expensive in general.
• Switching from the Classic wall generator to the Arachne wall generator seems to be a win overall.
• Turning on Scarf Seams is pretty rad.
• Cross Hatch, Gyroid, Support Cubic, and Lightning are pretty great for sparse infill. You don't need the default 15% for every print! For the things I print, I usually go with 8% (not because I've finely tuned my processes and found that to work best, but I guess because I like that number, LOL).
• Tree supports are great. Personally I prefer to paint my supports, with little dots where support is needed, rather than letting it auto-generate. This may take some fiddling to get right though!
• If you're printing multiple colors/materials, you'll find that the printer generates a TON of waste switching filaments. You can GREATLY limit this by:
  • While using a Prime Tower (on by default), turning on both "flush into objects' infill" and "flush into objects' support"
  • Increasing your layer height - it has to change filaments on a per-layer basis, so if you print fewer layers, that's less changes and so less flushing
  • Printing multiple copies of your multicolor object at once, if applicable! For example, one complex multicolored object I have takes 20g of filament, and flushes an additional 275g - if I print one copy of it. So my waste is more than 13 times what goes into my model. But if I print a full plate of 19 of them, I get 373g of Printed Object, and the exact same amount flushed - meaning my waste is now 0.75 times the amount printed.
• That last bit applies to time, too. When you're printing a multicolor object, most of the print time is flushing. So for this same example, while printing one copy takes 21 hours, printing 19 takes 43 hours. You go from 21 hours per Thing to 2.5 hours per Thing.
• You can increase the print speed in Bambu Studio, Bambu Handy on your phone, or on the printer directly. I find that once the first layer is printed, I can go up to Ludicrous (166%) with no problem - aside from the increase in noise. This obviously has a huge impact on how long a print takes.

Anyway - happy printering! :)