When are you coming here, and what kind of fishing do you want to do? There are many options available from sea charter for halibut to remote fly ins for rainbow trout. A lot of what you fish for depends on the time of year.
I don't know what kind of help you want. You say you want to go fishing for salmon and trout. Again, do you want to fly in? Do you want to charter a boat? The silver salmon run in August. You can catch them in the Matanuska Valley in the rivers or in the ocean at Seward are two very common choices.
If you just want to catch fish and don't really care what go to the Kenia river. There should be a bunch of humpies(pinks)running in August. If your limited to Anchorage go try Ship Creek. You may get a silver or two out of there. Not really sure of that area, the silvers run later here and we are covered with pinks in August.
A perk of majoring in wildlife biology in college is the plethora of hunting knowledge that you collect throughout your course load. One of the most important factors in whether an area can hold large quantities of animals or produce large antlers is forage.
Most universities, state schools and even community colleges offer basic botany courses and plant ID courses. Although it might not be feasable for the average middle age hunter to pay tuition and go back to college to learn hunting...