Hi Consuela,
My advice would be to have a look at several REGULATED brokers that you are able to trade with in your country. Set up demo account with a few of them that offer the lowest spreads, swaps and commissions, and test the EAs on each of their demo platforms to see which one gives you the the best results.
You can also usually find information on leverage, spreads, swaps and commissions on their website, and compare.
Cheers,
Ilan