Official site for the programming book "The C# Player's Guide," which teaches C# in a gamified voice with 100+ exercises; the site offers exercise solutions, errata and a free sample. The paperback is sold on Amazon, the PDF on Gumroad.
This is the offOne-line growth story, compiled by us from public sources; speculation is marked separately below.
Checkout: gumroad.com
“"Download a free sample from the book below." Print via Amazon, PDF via Gumroad; author RB Whitaker writes in first person”Quote from the site
New-user source: SEO (Non-brand search). Non-brand search 37.2% ("c", vin fletchers arrows and other exercise names from the book), direct 47.1%, referrals 9.4%. Readers working through exercises search the exercise name and land on the site for solutions; Discord keeps existing readers engaged.
Top channel measured by Similarweb, others estimated by rank
| Attributable new users, last month | Share |
|---|---|
| SEO | 37% |
| Other | 63% |
Direct + brand search 47%. Direct and brand search count as viral only when the site shows sharing mechanics; the largest share wins, under 5% means Other.
| Country | Share of visits |
|---|---|
| United States | 63.91% |
| Russia | 12.79% |
| United Kingdom | 9.17% |
| India | 6.59% |
| Canada | 3.21% |
English
25 keywords · brand ~47% · organic 100% / paid 0%
| Similarweb top 5 keywords |
|---|
| c |
| vin fletchers arrows challange text |
| vin fletchers arrows |
| the c |
| 'the c |
Non-brand queries: c, vin fletchers arrows challange text, vin fletchers arrows, the c, 'the c
| Category | Share of referrals |
|---|---|
| Programming and Developer Software | 1.67% |
About 3,147 last month (Similarweb estimate), #599 of 606; the month before was 87. Opening checkout is not paying, so this is not revenue.
New-user source: SEO (Non-brand search). New users mostly come from need-based searches Non-brand search 37.2% ("c", vin fletchers arrows and other exercise names from the book), direct 47.1%, referrals 9.4%. Readers working through exercises search the exercise name and land on the site for solutions; Discord keeps existing readers engaged.
Paperback (Amazon) and PDF (Gumroad) for sale, prices not found; free sample available
Dossier confidence: medium. Parts 1 and 2 come from reading the site and Similarweb data; part 3 from public reporting, founder posts, Wayback snapshots, WHOIS and similar, with speculation marked.
The number: checkout visits is Similarweb's estimate of visits from the site to a checkout payment page; opening checkout is not paying, so this is not revenue. Small sites land on fixed buckets.
Data through last month. Page updated 2026-10-26.
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