The BBC computer with BBC BASIC was good. I used it some; I didn't have one, I used the one in the British Library in Chennai (Madras), from where I also got tons of good computer books to read, over some years while in college. (I used to max out the four-book allowance and borrow that many at a time to take home to read :) Apart from supporting just BASIC programs, it had the feature of allowing you to drop down to inline 6502 assembly language, just by including all the assembly language statements between square brackets, one statement per line.

I also used a few other micros like the Apple II, the Commodore 64 and the IBM PC Jr. for a while.

Here is one post I wrote about it:

Lissajous hippo, retrocomputing and the IBM PC Jr.:

https://jugad2.blogspot.in/2012/09/lissajous-hippo.html

I also started on an Electron too, though we later got a juicier Master 128.