Yes, it's quite possible, though sometimes difficult to do everything the "book" recommends due to the increasing complexity of modern cars. I'd get yourself a Haynes manual and read it all. Then you can decide what you feel capable of tackling yourself.
If at all possible it helps to befriend a local one-man or small garage operation with a good reputation in the neighbourhood. What he can do swiftly and relatively cheaply on his ramp and with his tools might take you days grovelling in the road under the car.
We've got one near here and only about a month or so I was in there and behind a young lady with clearly the same problem. The boss/foreman/mechanic/ teamaker/floor sweeper was saying something like "Look, I'll do an oil and filters change for you, and I'll give it a look over and tell you if there's anything that NEEDS doing now, all for £40, then you won't waste money on something that's not important." I'm sure he didn't make any money out of it, but he will when she comes back and when she tells her friends. If you can find a gem like that, you're quids in.
Years in my youth on the ground draining sumps & punching screwdrivers through recalcitrant oil filters.