I took the ISC2 review course, then studied over the weekend using the class study guide and flash cards and then took and passed the exam on the following Monday.
CCCure.org has quite a lot of online tests. I used it many years ago as practice for my CISSP
Please note that @clementdupuis retired the original CCCure.org site that I also used many years ago to prepare for the CISSP exam. That page now points to his new Quiz Engine and Learning Portal sites.
Best I can tell the sites do not yet support the HCISSP.