Online guidance can help you understand the visa route, documents and application steps, but your eligibility depends on your personal circumstances. Start with the relevant guidance and application service on GOV.UK, and check that any immigration adviser is regulated by the Immigration Advice Authority or is a solicitor regulated by the SRA. Be cautious of websites promising approval or a particular result, as no adviser can guarantee a decision. For complex applications, refusals or previous immigration issues, consider obtaining tailored advice from a regulated immigration professional.