Yeah don't despair, I just had a look back when I first started reloads in January and some days I was only making £3, and my total for Jan was £247. This month I've made over £800 so far - most of that was due to Cheltenham races to be fair!! I hadn't intended to do much at Cheltenham as I don't really bet on horses but the week before I just decided to go for it and read up on how to do all the different deals and use the different calculators and I just went for it and I'm so glad I did!!
But just pick a couple of bookies with deals you like and go with it for a week or 2 until you're comfortable and then add in other bookies. It can take a while to navigate bookies websites as some like to hide their boosts like Totesport and Betfred but once you get into a rhythem with it all, it'll become second nature.
To be honest I haven't even ventured into horse refunds yet, I mostly stick to Will Hill boosts, and various weekly free bet clubs with Skybet, Betway, Coral and Paddy - I'm so comfortable with them all now and after Cheltenham i need to expand my horizons so will start to look at them later this month
Good Luck!!!