First, go to your "Recruiting Board" and the game tells you which players are coming in for visits this week. Then, the very first column on the left will have one of the following icons:
Phone - Means he's available to talk
Clock - He wants to schedule a visit
Airplane - He's coming for a visit this week
X - Committed elsewhere
Click "A" on any of your recruits that have the Airplane icon and one of the options will be to schedule activities for his visit. You can only do this for players that are visiting this week. Also, you call the player, Reschedule the visit for the current week and the list of activities pops up instantly.
Anyway, as for recruiting (playing as PSU in my dynasty) I look at not only my current needs, but how many Juniors I have as well since I'll lose at least one of those to the NFL draft. I'll obviously target my immediate needs first then start picking players in a position where I have a few juniors. For needs, I'll sort by Interest and pick those players who are obviously the best and interested in me. I'll also take fliers on a top prospect in a stacked position, even if he has no interest in me (if I don't have too many needs to fill). For example, in Year 2 of my dynasty, I targeted the #1 tackle even though I have 5 freshman tackles. This prospect was from CA and I want to get a pipeline going there, so that is another reason why I selected him (although there are better options for getting a pipeline state going).
Also, eventhough I may have the top 4 MLB's interested in me, I actually chose to recruit the #6 MLB as I liked his stats against the pass better. I've found that you can un-earth some 3 star gems this way, especially against the offensive line. I personally will target 3 star prospects who are good in certain areas (I.E. run block for OL) if they have at least an "A" in awareness. I have no proof, but always believed those with an "A" in awareness will progress nicely.
Finally, I'll comb through Athletes to fill other holes where I'm having trouble landing a good prospect (you can look at their stats to determine what position fits them best). Fullback always seems to be a need and I am heavily recruiting a 6'8" 305 lb fullback with all C+ / B fullback ratings.
I'll issue all my scholarships during the first 2 weeks as this chews up some time. Then, if I have a big lead as a prospect's chosen school, I'll try and get him in early for a visit to wrap it up. If it's a close race between schools, I'll try and be one of the last schools this prospect visits. I personally find that when a prospect is close on choosing a few schools, the school that makes that last impression on a visit usually wins out.
I make sure to contact all my recruits each week, even if it's a 5 min quick call. If I have a prospect in the 20's or so who has me #1 and really interested, I'll bump him up to the top 5, spend an hour on the phone and usually sign him that week.
Ok this is getting long so I'll leave it at that. Hope this helps.