I started off part time around a 9-5 office job.
Whether its "worth your time" is something only you can decide, but this job has a massive advantage in that your start up costs are very low.
Nice bra and knickers - £10 from Primark if you don't already own
Shoes and dress suitable for outcalls - you don't want a full on hooker style for outcalls so just wear the sort of dress you'd wear for an evening out to a restaurant
Cheapest payg phone and sim - £10 each (do NOT be tempted to use your own personal phone)
Lube and condoms - under £10
Enough credits on AW to display your number and buy local escort search - £10 (or use other directories, but the ones that bring business are generally more than this)**
You will also need transport if you're going to do outcalls, although I know some ladies who get the client to transfer the taxi fee upfront. I prefer to drive myself in case I wanted to leave early.
I used to book a hotel in the nearest big city for Friday and Saturday night and drive up on Friday evening after work and do outcalls til checkout Sunday. I'd switch my profile to offering incalls on those days, then switch it back to outcalls only for the weekdays. I think the first month I probably made about £1k after expenses.
**Whilst it's technically true that you don't need to pay AW anything to have a profile, and that men can contact you via the AW email system, you will find that 99.9% of the men who contact you like that will be timewasters just wanting to write you a long wanky email, maybe exchange numbers, give you a load of bollocks about how they're going to book you reeeeaaaalllll soon, try to get some free photos out of you, and then bugger off never to be heard from again. Paying for number display winnows a lot of these out, and I find I need local escort search to be noticed, although that does depend if you're in a city with a lot of competition.