I would advise you to include any "learning experience" that demonstates professional development. So, if you attended a presentation that, say, teaches you how your particular company stores and retieves documents, I wouldn't include it. A two week course on advanced programming I definitely would include.
No, you are not the first to raise these questions. Put yourself in the mind of an assessor who is looking for evidence of engineering competence and will himself (herself) be a registered professional engineer. Avoid padding it out - how would you judge the person who had included it?
In a long winded way I am saying be succinct
David Parr BSc.CEng MIET