The basics Naruto learned during his journey with Jiraiya are:
Proper taijutsu and including less shadow clones to fight 1 opponent which were shown against Kakashi's training exercise, fights against Deidara and Kakuzu.
Naruto became better at throwing kunai or using them at close range with one hidden in his right arm-sleeve. (Though I might be wrong that he was bad at kunai handling in Part 1, correct me if I'm wrong.)
He showed basics with unsealing scrolls by throwing big shuriken at Sasori in the cave where Shukaku was extracted from Gaara.
Noticing that he's in a genjutsu and some effort in dispelling them against Itachi.
Also this could count that he managed to make a bigger Rasengan.
While I'm really disappointed in Jiraiya not teaching Naruto any elemental ninjutsu, better cooperation with different toads or even the Flame Sealling Method to seal away Amaterasu, which would come in handy against Itachi and later Sasuke, Jiraiya spent time that Naruto would be able to use more of Nine-tails chakra which didn't work out as intended and by fixing Naruto's ADHD tendencies by talking and spending time with him. Also he passed to Naruto his philosophy about peace.