SGX offers informative seminars/webinars catered for all, be it investor or trader, beginner or advanced. Best of all, many are free.
Instructors for all 4 webinars I attended were very engaging. They asked questions to gauge the audience's knowledge and explained terms based on our level of exp.
There is also a Q&A at the end which I found very useful. Pidgeonhole makes it easy to upvote questions.
I attended Basics of Investing which I would highly recommend to newbies starting their first foray into investing. The instructor introduced basic investing instruments such as blue chips, REITs in a manner that was extremely digestible.
Given that it is for beginners, it may be too simple for investors with some exp.
There's also a good variety of free intermediate webinars ranging from TA to leveraged investment instruments.
Even if you don't use or believe in using TA or leveraged instruments, I think it's a good way to understand some of the terminology being thrown around or to form your own thoughts on such indicators/instruments.
Have yet to attend one.