This is the 10335th most frequent Turkish word.
bilgiyle
"With knowledge" or "by knowledge."
Here, 'bilgiyle' indicates association or content that the books are full of knowledge.
O, bilgiyle dolu kitaplar okur.
She reads books full of knowledge.
In this sentence, 'bilgiyle' implies performing an action (deciding) based on knowledge.
Bilgiyle karar verirsen başarını artırırsın.
If you decide with knowledge, you increase your success.
Here, 'bilgiyle' suggests that the action (acting) is guided by knowledge.