graph TD

        0{level 0} -->|Start her for <br/> 0 tech experience| 1

        1[1 - Computer Science fundamentals] ------> 2[2 - Programming fundamentals]
        subgraph one
            1 -.- 1a[computer architecture]
            1 -.- 1b[operating systems]
            1 -.- 1c[linux and shell]
        end

        subgraph two
            2 -.- 2a[algorithms and datastructures]
            2 -.- 2b[git and github]
            2 -.- 2c[basics of programming]
        end

        2 ------> 3a[3a - Frontend Engineer]
        subgraph three-A
            3a -.- 3aa[HTML and CSS]
            3a -.- 3ab[Clean Code]
            3a -.- 3ac[Design Patterns]
            3a -.- 3ax[TBD]
        end

        2 ------> 3b[3b - Backend Engineer]
        subgraph three-B
            3b -.- 3ba[core language]
            3b -.- 3bb[Storage and databases]
            3b -.- 3bc[Queueing]
            3b -.- 3bd[Design Patterns]
            3b -.- 3be[Clean Code]
            3b -.- 3bx[TBD]

        end


        3a ------> 4
        3b ------> 4[4 - Architecture and System Design]

        subgraph four
            4 -.- 4a[distributed systems <br/> distributed computing]
            4 -.- 4b[architecture patterns]
            4 -.- 4c[Scaling, availability,Consistency]
            4 -.- 4d[Databases and Caching design]
            4 -.- 4d[Networking and Security]
            4 -.- 4x[Event driven and Messaging]
        end

        3a ----------> 5
        3b ----------> 5[5 - Cloud Computing basics]

        subgraph five
            5 -.- 5a[LearnCloud]
            5 -.- 5b[IaC]
        end

        5 ------> 6[6 - automation and operations]

        subgraph six
            6 -.- 6a[CI/CD and devsecops]
            6 -.- 6b[Site Reliability]

        end



        click 1 "./#/computer-science-fundamentals" "x"
        click 1a "./#/computer-architecture" "x"
        click 1b "./#/operating-systems" "x"
        click 1c "./#/linux-and-shell" "x"
        click 2 "./#/programming-fundamentals" "x"
        click 2b "./#/git" "x"
        click 2a "./#/algorithms-and-data-structures" "x"
        click 2c "./#/basics-of-programming" "x"
        click 5a "./#/learning-a-cloud" "x"
        click 5b "./#/iac" "x"