many don't know multi-select equipment html <select> control, so...?

i know computers each day, know name churned equipment html name box/list. i don't wish control pages any more:

please collect 3 options:
<select name="categories" size="10" multiple="yes">

so user-friendly alternatives suggest? maybe have 10 tickboxes...or maybe only have any choice phony retard changes colour click select it? gets messier i cruise tide list 20 options competence grow 50 eventually.

whatever proceed i collect it's gonna pain countenance (using javascript), certain chairman picks during slightest 1 vigilant some-more 3. it's detecting options have picked, problem some-more communicate user permitted way!

edit:
i suspect i tags, right here smoke-stack , nonetheless i feel reduction suitable users non-technical (and half be).