The ability to play the solos on here depends largely on the facility of your "picking" hand.  These arrangements were influenced by classical guitar technique, employing the thumb (T), index (1), middle (2) and ring-finger (3), referred to throughout the text as the "pick-hand".

The customary designations found in guitar music for the thumb and fingers of the picking hand are:

FIGURE 5

Generally speaking, the thumb plays all the "bass" notes on the three low strings(6-5-4) while the melody and harmony lines are played out on the top three strings(3-2-1) by the index, middle and ring fingers.

With this finger alignment, it is quite natural for the thumb to play all the bass notes on the three bottom strings, the index finger all melody and harmony notes on the 3rd string, the middle finger all the melody and harmony notes on the 2nd string and the ring finger all melody notes on the 1st (top) string.

The pick-hand directions have been left open to the discretion and preference of each player.  Due to the personal nature of guitar playing, there are many ways to play a finger-style arrangement. The size and structure of hands, as well as their innate ability and dexterity, varies from person to person, and what works well for someone else, may not work well for you. 

As long as you fully use all of your fingers in an intelligent manner, any "system" can work for you. Carefully planned, well thought out fingerings can make a major contribution to the successful performance and overall accessibility of a piece. Your choices should be based on what you can play most easily, while at the same time producing the best sound. 

NOTE: For the novice, there are two types of "strokes" for sounding the strings of the guitar; the "free stroke" and the "rest stroke." To this end, seek out publications that deal with specific performance techniques.  Your progress will be quicker and more rewarding if your fingers are properly trained from the onset. There is much to glean from "classical" technique, even if you have no intention of becoming a bona-fide classical guitarist.