In reply to Yorkieboy:
Generally it's said it's better to train the different energy systems at different times to avoid 'interference'. So you could train both in the same day but one in the morning and one in the evening for instance. But if you can only climb 2 or 3 times per week I'd be tempted to leave the aerobic stuff and just concentrate on strength training. How you go about that is going to depend a lot on what facilities you have available to you: eg. good bouldering wall, a lead wall, a normal gym, fingerboard, rings, bars etc. There's a massive range of options.
In addition to the sites mentioned I'd also add Power Company Climbing (www.powercompanyclimbing.com) which has a lot of good podcasts and a bit more geeky in depth than the TrainingBeta ones.
Mani the Monkey's Youtube channel also has a lot of good stuff on it:
https://www.youtube.com/channel/UCvkGOw5JmJ3TPdXNiEFwq6Q
There's the Anderson bros site: rockclimberstrainingmanual.com which has a fair amount of stuff on.
There's climbing.com (from the US mag) which has load of stuff on including a new series of training articles starting this week:
http://www.climbing.com/skills/learn-to-train-a-complete-guide-to-climbing-...
http://www.climbing.com/skills/climbing-training-increase-your-power/
Climbstrong.com has some stuff for free but most stuff is pay for ($10 pcm) so a bit pricey imo.
Finally don't forget this site (UKC), lots of stuff in the forums as well as many good articles from the past.
I'm sure there are a few more but I lost all my newsfeeds last week when I changed my newsreader and not recovered everything yet.