Quickest,cheapest. Way to troubleshoot and fix a blinking engine light,44,61,63

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I am stuck in a strange town with 2 broken rigs...o bought the 2nd on good faith, my mistake....2 week mistake...i am almost broke and cant seem to find a mechanic with time. 1993 isuzu amigo 4x4 has blinking check engine light codes that come up 12,44,61,63...besides ebrake not connect and dragging etc etc. I really need to get home. It loses power if throttle pushed very much and totally up even a small hill. PLEASE help me get this going