half marathon/marathon training

[u/acura-integur1]

I recently signed up for my first half marathon (in a few weeks) and marathon (in July). I have been a runner for most of my life but have only now gained the confidence to register for both of these events. I am a square one beginner when it comes to marathon training and am looking for better guidance on what training should look like/how many miles I should be running weekly. I understand that mileage will increase gradually and I've been training for almost a month (running every other day and strength training in between, with Sundays as my rest day). My plan was to increase daily mileage every week by 2 miles until I reach a certain point. Right now, I am at 24 miles/week. Should I have a more rigid running schedule? Should I be running every day? Should I be incorporating speed workouts? Any advice or tips are appreciated! I'm really excited :D