Your dog will not understand you. They do not speak English. You can teach them words but to them they will be sounds. They will never understand what a word means, just what happened after the word was said and the outcome of what happened. Try to get into this mindset from the start, and be consistent with your cues (what we might normally call commands) across your entire family.

Some dogs will respond to physical cues better than verbal cues. Try to get in the mindset that you aren’t giving the dog a command, you’re giving them a cue. Do the all the steps of X when I say Y.

Martingale collars are great and can be used in conjunction with a harness. A harness is fine with training. It is true that dogs find the tugging rewarding but a well trained dog will behave regardless of what they are or are not wearing.

Look up LIMA training. Look up the Two week Shutdown

Look up the Three DS of training YouTube is an invaluable resource, but pick your content creators wisely, I would recommend a Lima trainer. I like Kikopup because the content is easily digestible.

If you THINK your dog is ready for X, consider that it is not and you need to revisit whatever you are working on. When you KNOW they are ready, consider it again.

Crate train, but the crate is never a punishment.

You will soon have a new best friend and an incredibly rewarding relationship. It will most likely be hard at first but it will be worth it.