so this is a bit 'how long is a piece of string' - but i've started swimming a couple of times a week, but i think my technique is probably awful, to anyone who knows how to swim properly, how many hours of lessons do you think i might need to get a grip on the basics of front crawl and breaststroke? (i'm better at breaststroke - get a bit tired doing front crawl and struggle to breath properly)

i can do about 1km of swims in about 30 minutes - so i'm not TOTALLY shit at it