webby1983..
I'm witht he Royal Road as well..
however.. if you don't get on too well with books (I must admit I do struggle at times) there are a few other sources you could try..
There are a number of DVDs which contain forces such as..
10 Ways to force a card (£7.99)
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http://www.magictricks.co.uk/prodshow.asp?code=475
It's a bit pricey for what it is but it's not bad (I know others don't rate it but I thought it was OK when I bought it when I was in your situation not so long ago), however there are other sources which cover these 10 (including the royal road).
Basic Card Technique (Richard Kaufman) (£28.99)
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http://www.alakazam.co.uk/cgi-bin/sh000 ... 1093#a1093
Which covers a few forces but also covers other sleights as well. Depends how heavily you want to get into card magic really or whether you just want to learn a force for Un-ripped (which i have by the way.. so I know what you're on about !). But not really just for forces as he only gives you two and it's expensive for that ! (and there are no tricks included)
Daryl's Ecyclopedia of Card Sleights Vol 4 (£27.99)
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Very expensive, but if you are serious about card magic.. I think this is a must. Volume 4 contains more forces than you'll probably need and it's daryl who I always find entertaining an easy to understand. I've now got 5 of the 8 volume set now (I buy them as I need to learn another sleight etc.. and have spread the cost of them over quite a few months). This series really is worth having if you're into card magic as it contains enough material to keep you practicing for many, many years. (but no real tricks as such).
So there you are..
I know some will disagree with me.. but if you do struggle with the Royal Road then you could try the above.
Hope this helps
Slippery