Of the easily attainable textbooks, Coroneos is by far the best resource for Conic Sections. Has a great number of theoretical problems, which are commonly asked in the HSC.
In my personal opinion, none of the easily attainable textbooks cover Curve Sketching very well. However, if I had to pick, I'd say the old blue Patel textbook (not to be confused with the Excel version), which explains steps clearly and in a decent amount of detail.