Welcome to the forum!
As mentioned, there’s lots of great resources here on the forum, like the All LD techniques thread.
My general advice to beginners is:
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start keeping a consistent dream journal (which will help your dream recall, help communicate to your mind that dreams are important to you, and help you find your dreamsigns).
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Choose one LD technique that appeals to you, and be consistent with it for a few weeks to give your mind the time to accept it before trying another technique (unless of course, you really really don’t vibe with a certain method after trying it).
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Be kind and patient with yourself. You’re learning a something new and you should honor both the big and little successes.
You mentioned having ADHD and knowing that is great; my girlfriend has ADHD and being diagnosed with it is so helpful for her to anticipate challenges and choose strategies that will be most effective for the way her mind works.
I know ADHD is a spectrum and I mostly know her experience, so what I suggest/ discussions I’ve had with her may or may not be helpful for you.
She has had a few LDs, but she’s not really into pursuing it like you sound you are, so she hasn’t really attempted much as far as methods go (most her LDs are spontaneous). However, she has challenges with prospective memory (remembering the intent to do things in the future) and therefore I wouldn’t recommend MILD for her as a technique. If your prospective memory isn’t very strong then I would suggest something other than MILD, (even though I think it’s the easiest for a beginner to try.)
She also has mentioned challenges with forming habits, such as keeping a regular journal. The journal element of lucid dreaming is really important -or at least, I don’t know anyone who is able to regularly lucid dream and doesn’t keep a journal. In my experience, my journaling habits are directly correlated to how often I seem to lucid dream (or at least recall my dreams). If keeping the journal might be a challenge for you, know that you don’t have to keep a super detailed written journal. You can keep it to a few sentences if needed. I think some people do a verbal (voice recorded) journal too if that’s more your style.
Again, this is just based on discussions I’ve had with her. I also know that a lot of people with ADHD can hyper focus with things they’re interested in, and that might end up helping you succeeded with some dream habits (like the journal), or your chosen techniques. Shoot, you might be a great MILDer! You know yourself best so take my suggestions with a grain of salt and adjust for what you think will work for you!