I have been recently writing some tutorials on CP. Some are very basic concepts like graph theory basics. However there are a couple of intermediate-advanced topics as well. Do give it a read
Beginners:
Graph - 1
Graph - 2
Graph - 3
Trees
Intro to DP
Medium:
Euler Tour
Centroid Decomposition
Spanning trees
Small To Large Merging
2-D structures
Converting 1D problems to 2D
Advanced:
Segment Tree Beats - Intro
SegTreeBeats- Complexity -1
SegTreeBeats - Complexity -2