@menaughty, please accept my condolences over losing your mother.
You've received some solid advice and I'd like to add some of my own. Dallas has an LGBT center called Resource Center. I hoped they had a coming out group, but it appears they don't have anything like that for men. They do have a community center and referrals to counselors, which might be worth pursuing. Also, there is a coming out group on Reddit you might find beneficial.
Lastly, welcome to our forum! You always have us to lean on. Please feel free to ask for help like you have done here. That's what we are here for.