These are powerful thoughts. This is the best post for legacy programmers. So far you have learnt COBOL and database is DB2. Actually these two are enough to learn new other technologies. Let us come to mainframe, apart from the above skills other skills ( VSAM, JCL etc) are not transferable.
Since by learning COBOL, you will be in a position to understand and learn quickly. For example C,C++, Python are the best ones to start. These are being used in almost all degitial technologies. The best example is in machine learning.
Next most popular database is MYSQL. The knowledge of DB2 is highly helpful to learn it. Since in UI development MySQL is the popular database.
A little girl goes into a pet show and asks for a wabbit. The shop keeper looks down at her, smiles and says:
“Would you like a lovely fluffy little white rabbit, or a cutesy wootesly little brown rabbit?”
“Actually”, says the little girl, “I don’t think my python would notice.”
—Nick Leaton, Wed, 04 Dec 1996
You can achieve in step by step. Start learning Python and MySQL to take your seat in digital technology.
Do not worry, by learning these you can too work as freelancer. Just register yourself in UPWORK, Freelancer etc.
Having laptop is a good asset. Since you can learn all these separately.
There other online ways you can learn any new skills. Example UDEMY and SIMPLILEARN etc
You can show in your resume that you gained these skills by way of having certification.
Keep reading my blog for more tips.