Would you be willing to recommend the best trail for hiking Mt. Shasta?
Depends on season, and what you are looking for (snow, glacier practice, skiing, etc), and your skill and experience level, and your comfort with exposure, trail finding, crampons, scree, glaciers, etc.
The "easiest" is usually the avalanche gulch route from bunny flat TH specifically in June and July (at least in a normal year), conditions permitting. It can also be the most crowded.
If you don't have good snow skills, you may want to consider a guided trek. Three outfitters have permits to guide on Shasta. Guided group trips cost maybe 300-700 dollars (1-3 nights) and include snow skills.
If you have snow skills, then the Fifth Season, a store in Shasta, is a great source of advice and info. They have a website too. They can provide season- and skill-appropriate advice.