my first handjob by another person was when I was 16. I'd had some girlfriends before that but none of them had ventured below the belt. I was a horny young guy and I didn't want to wait any longer for a girlfriend to service me so I decided to go to a massage parlour.
I lived in London at the time and had my first job, so I had some money in my pocket. I looked in some newspapapers to find a likely looking massage place. I picked one and went there. I paid for a sexy looking french masseuse just for the massage. She was really nice to me. After a while she asked me if I wanted any extras. I said "maybe" and she gave me a list. I didn't have much money so I went for the straight handjob. She was really skillful but it still took me a while. So she let me fondle her breasts outside and inside her clothes. That really helped. I vaguely remember it being really great but it's fuzzy memories because it was 30 years ago.
The cost was about a weeks wages for me. So I only went back 2 more times in the next year or so. One girl was from Finland and another English, I think, both very attractive. But, I couldn't really afford it often on my paltry wages. However, by the time I was 17.5 I had a string of steady girlfriends so never really had to frequent "happy ending" massage parlours again. I don't remember my first HJ by a girlfriend. I'm sure I must have received many but it didn't imprint on my memory like the first one at the massage parlour.
One thing that is interesting for me is the massive change in my spending power over the years. At 16, a happy ending would cost me a weeks wages in London. If I wanted one in Shanghai, China today, it would cost me about 30 minutes wages. Not that I do because I have a lovely girlfriend who takes care of me well in bed. She's especially good at handjobs. But it's of academic interest all the same