None of this is rocket science. Most of the fixes can be easily done by an amateur, the front timing chain cover will probably take more than a day. If you do remove the cover, you might as well replace the timing chain at the same time.
Put the ole' truck in the air, drop the alternator so you can see, and determine where the leak is! Once you find the leak, buy a Chiltons manual so you can see what you will have to do to fix it. If it is beyond your space/tools/time, then go to a shop. If you have the facilities, tools, and luxury of time....fix it yourself.