I have not researched Oanda so I am not much help there, but I have heard many on the hub use them - and Ihub folks are known to be somewhat dim-witted as a whole (NOT ATM'ers though lol!) so I would be skeptical of 'em until your research is finished.
I don't know this Oliver person, but engulfing is a good pattern to make a move on IMO. Of course remember there is no holy grail and for me it is just 1 of the tools I would use.
Are ya in the "paper trading" phase of forex now, or real money? Have you picked out what pair(s) you'll be trading and doing research on those? IMO, maybe nice for you to take a look at Ichimoku cloud and project the "day" you are trading for strength of direction, then narrow down focus to smaller time frame for your daily trading - if you are doing short term day trades...
AAHHHHH ! I don't explain things well!!!!!
Ok...ok ...... tell me your ideas of how you will be trading and length of time you would like to be holding a position....