Buy about 3 one-litre bottles of water-based lube. You can save them up to 2 years.
If available - buy coconut oil instead, it's the best: not too expensive, body-safe, easier to clean out than silicone lube.
->Yes, use lube with fingers, plugs and dildos.
Butt plugs are not a must. If you think for a sec, you can put a dildo in and enjoy the same sensations, while sitting-lying and watching xxx, or getting off in other ways.
Once you get used, you can start sliding it in and out.
With a BP you only put it in, no movement.
Fingers are better than plugs
- it's your ass, no one's gonna study where it turns, how it contracts, what it does at certain times.
- if you clean out, fingers help find messy bits faster. Manuals recommend to put water inside you, and you easily might have to use 5-15 litres until you are clean. With fingers, you save water to 2-3 litres
- with fingers you can extend them or bunch them up
- and they are a part of your body. Love thyself, darn it!
For anal play you'll need dildos starting with 7" INSERTABLE length. Not shorter. Shorter ones are OK for vaginal, but not enough for backdoor.
If you are going to use suction cup dildos, forget the idea of putting it onto a wall and bucking back.
No, you need a barrier between your legs and the wall.
I use the side of my cupboard. It's not wide, and I can hug it with my legs and get the toy balls deep inside. The wall doesn't let you hug it, you struggle where to place your limbs and can't arch your back.
I always use enemas with warm water