You should follow the advice and really read at least the introduction in the manual, otherwise you will not accomplish much. For instance when trading with BTCUSD you must first develop a strategy, there is no BTCUSD strategy included in Zorro.
Besides BTCUSD is an exotic pair and I doubt that any MT4 server has a long price history for it, and FXCM hasn't either, so you probably need to get that from elsewhere.
From the manual:
Step by Step - download historical price data for a new asset
Select the Download script and the broker (f.i. FXCM). MT4 can normally not be used for downloading historical price data. Make sure that the broker's price server is online.
Uncomment #define ADD_ASSET "..." (give the name of the asset whose price history you want to download) and also comment in #define PRICE_HISTORY.
Set StartDate and EndDate to the years you want to download. Note that FXCM has no currency prices from before 2002 and no CFD prices from before 2007.
Click [Trade]. The price data is automatically downloaded. If price data files of this asset are already found in the History folder, no prices are downloaded except for the current year. For re-downloading old prices, delete the price data files before.
And I see you have an old Zorro version, and no working MT4 bridge, so the download script cant run anyway. Get the new version 1.22 that just came out, you will need it for new MT4 versions 600+.
