i need some years of expirience and wisdom please!

[gudsgf]

thanks to anybody that clicked on this. heres the story...I drove my 1977 k 10 everyday for 2 years then got layed off and didn't start my truck for 6 days went to start it on the 6th day no power so I got battery tested and it was bad so I bought a Brand New battery lasted about 4 or 5 starts around the course of about 2-3 weeks then no power. tested bad warranty replaced at that time I also got my alternator checked it was good. just installed battery and alt. radio came on turned the key clicked about 4 times never cranked then I turned off then tried to start no power. im completely at a loss. any help is greatly appreciated thank you. sorry for the novel