Well I'm not sure you will get rich with my tips, but I have done really well on the Grand National in the last few years.
My shortlist is Cappa Bleu, around 14-1, Treacle 20-1, According to Pete 33-1 and BecauseIcouldn'tsee 20-1. I reckon any of these could win, and all have really good place prospects.
It's a really open race this year, not that it's ever clear cut, but there are usually a lot more I can immediately discount as not having a chance than this year.
If you have'nt already got a betting account, I would recommend shopping around because they are all offering good deals for the National, and for new customers. The best deal I can find is with BetVictor, who are giving 6 places instead of the usual 4. Some firms give 5 places, but 6 is exceptional value. Also for new customers placing a £25 bet with them, they give you a matching bet free, so if you're going to stick £25 on the race, you will then be given a completely free £25 bet to use.
Good luck.