Start with the skill you want to improve, then choose a resource that gives you a way to practice it. A professional development budget is useful only when the purchase fits both that goal and your employer’s rules.
Check the policy first
Find out what is eligible, whether approval is needed, how reimbursement works and when the budget expires. There is no universal annual amount or rollover rule. Do not assume hardware, travel or a subscription qualifies.
Compare formats by the work they support
Smashing’s books can suit focused reading on design and development. Master.dev, the current destination of Frontend Masters, offers technical courses; review the syllabus and exercise format before subscribing. Smashing events can suit a specific workshop or discussion. Verify current dates, access and costs on the provider’s site.
Choose a book when you can work through it steadily, a course when demonstrations and exercises help, or a workshop when feedback matters. A subscription you do not have time to use may be less useful than one focused resource.
Make the learning observable
Exercise: name one skill, one resource and one small project that will demonstrate the skill. For accessible forms, that project could include labels, validation, keyboard operation and error feedback. Share the result with a colleague if that fits your goals.
Free HTML and CSS learning paths are also a starting point. Spending the full allowance is not itself the outcome. Language study or broader skills may be valuable, but check their relevance and eligibility rather than claiming they inherently improve programming.
Sources
Reference 1 Reference 2 Reference 3 provide the technical details and current compatibility information.