The three books in the han solo adventures are not linked to the movies in any shape or form but it does make han solo and chewie's characters that much more exciting, these books show you that they are in the top elite and it expands on him having more brains that luck and cheap tricks.
The first book "Stars End" is about the duo being brought into a rescue mission, this is where there new long time partners Bollux and Blue Max come into the story, and unlike C3PO these ones play a part in what happens. Out of the three the first book is by far the best, the book builds up in excitement and tension until the big finale at the end, which is well worth the wait.
The Second Book Han Solo's Revenge follows on from the first book where they are now back down on there luck and working on some horrid planet, they then are forced to take a job that sounds dodgy and turns out be out right slavery, they then go out to find out who set them up.
The Third Book The Lost Legacy was a really exciting book, at first i was not looking forward to a treasure hunt story but Brian Daley makes it interesting when the falcon is taken, then the team have to go around a very basic planet, tracking down the murder of lanni's sister, the mastermind behind the falcons disappearance and their journey takes them to learning the truth of The Lost Legacy.
Han Solo and Chewie are by far the best characters, the relationship they have is well written. Blue Max and Bollux are an interesting addition to the story and they play important parts in all three books. During the three books other characters come and go, in the final book "The Lost Legacy" you are introduced to Budure, Han solo's old teacher, this gives you a nice look into Solo's early days.